Hakkodasan

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 40.659°N
  • 140.877°E

  • 1585 m
    5199 ft

  • 283280
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Hakkodasan.

The Global Volcanism Program has no Weekly Reports available for Hakkodasan.

Index of Monthly Reports

Reports are organized chronologically and indexed below by Month/Year (Publication Volume:Number), and include a one-line summary. Click on the index link or scroll down to read the reports.

06/1997 (BGVN 22:06) Volcanogenic carbon dioxide kills soldiers in a topographic depression


Contents of Monthly Reports

All information contained in these reports is preliminary and subject to change.

06/1997 (BGVN 22:06) Volcanogenic carbon dioxide kills soldiers in a topographic depression

On 14 July press reports noted that a party of the Ground Self Defense Force (Japanese army) on a training mission at the N foot of Hakkoda volcano without gas masks accidentally inhaled dangerous gases. In the darkness, some members of the party slipped into a depression (18 m long, 11 m wide, and 8 m deep), as did those who first tried to rescue them. The men were hospitalized on the evening of 12 July, but three lost their lives. There were no plants within the depression, and leaves on plants around it were dead. The fire station of the Aomori Prefecture mentioned that many holes and depressions emitting sulfurous acidic gases were located around this volcano. Local farmers reported dead animals in these depressions.

According to J. Hirabayashi, who inspected the depression on 13 July, its gases contained as much as 15-20 volume percent CO2 (much higher than the normal value of 0.035%), but no hydrogen sulfide. Delta 13C values were -5.7 for CO2 in the gas from the depression collected on 13 July, -6.1 for CO2 dissolved in water samples from the Hakkoda hotsprings, and -6.0 in the springwater from near the depression, collected on 14 July. These results indicated a magmatic origin for the CO2-rich gas because delta 13C of CO2 in volcanic gas in Japan ranges from -10 to 0 , whereas that in CO2 gas of organic origin ranges from -30 to -20 .

Information Contacts: Takeshi Ohba and Jun-ichi Hirabayashi, Tokyo Institute of Technology, 2-12-1 O-okayama,Meguro-ku, Tokyo 152, Japan (Email: ohba@ksvo.titech.ac.jp; jhirabay@ksvo.titech.ac.jp); Setsuya Nakada, Volcano Research Center, Earthquake Research Institute, University of Tokyo, Yayoi 1-1- 1, Bunkyo-ku, Tokyo 113, Japan (Email: nakada@eri.u-tokyo.ac.jp, URL: http://hakone.eri.u- tokyo.ac.jp/vrc/vrc.html).

The basaltic-to-rhyolitic Hakkodasan volcano includes 14 stratovolcanoes and lava domes south of Mutsu Bay at the northern end of Honshu. The NE rim of an 8-km-wide Pleistocene caldera forms an arcuate ridge across a flat caldera-floor moat NE of the Hakkoda group volcanoes, which bury the SE caldera wall. A northern group of volcanoes, constructed within the caldera, appears to be younger than the southern group. Hakkoda-Odake, Ido-dake, and Tsurugi-dake have well-preserved craters. Akakura-dake has a 1-km-wide explosion crater breached to the north. No historical eruptions are known, although an active solfatara occurs at Ido-dake, and hot springs are found at several locations within the caldera. Three minor phreatic eruptions were documented from Jigoku-numa on the SW flank of Odake volcano from the 13th-17th centuries. Three soldiers on a training mission in July 1997 were killed by inhalation of volcanic gas.

Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1550 ± 100 years Unknown Confirmed 1 Radiocarbon (corrected) SW flank of O-dake (Jigoku-numa)
1340 ± 75 years Unknown Confirmed 1 Radiocarbon (corrected) SW flank of O-dake (Jigoku-numa)
0450 (?) Unknown Confirmed 1 Radiocarbon (corrected) O-dake, Hk-1 tephra
0050 BCE (?) Unknown Confirmed 1 Radiocarbon (corrected) O-dake, Hk-2 tephra
1150 BCE (?) Unknown Confirmed 1 Radiocarbon (corrected) O-dake, Hk-3 tephra
2250 BCE (?) Unknown Confirmed 3 Radiocarbon (corrected) O-dake, Hk-4 tephra
2850 BCE (?) Unknown Confirmed 2 Radiocarbon (corrected) O-dake, Hk-5 tephra

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.



Synonyms
Hakkoda Group


Cones
Feature Name Feature Type Elevation Latitude Longitude
Akakura-dake Cone
Hakkoda-odake
    O-dake
Stratovolcano 1585 m 40° 39' 22" N 140° 52' 51" E
Ido-dake Cone
Tsurugi-dake
    Turugi-dake
Cone


Craters
Feature Name Feature Type Elevation Latitude Longitude
Jigoku-numa Crater
The Hakkoda volcano consists of a group of 14 stratovolcanoes and lava domes south of Mutsu Bay at the northern end of Honshu. The NE rim of an 8-km-wide Pleistocene caldera forms an arcuate ridge across a flat caldera-floor moat NE of the Hakkoda group volcanoes, which bury the SE caldera wall. This view looks from the west towards a northern group of volcanoes, constructed within the caldera. Akakura-dake, Ido-dake, and Hakkoda-Otake (left to right) have well-preserved craters. No historical eruptions are known of the Hakkoda group.

Photo by Takashi Kudo, 1996 (Hokkaido University).
The 1552-m-high Takada-Otake, seen here from Suren swamp to its south, is one a group of stratovolcanoes and lava domes forming Hakkoda volcano in northernmost Honshu. Takada-Otake and other nearby volcanoes form a northern group of volcanoes that were constructed within an 8-km-wide caldera. The northern group appears to be younger than a southern volcano group that buries the southern caldera wall.

Photo by Takashi Kudo, 1996 (Hokkaido University).
The Hakkoda volcano group forms the skyline SE of the northern Honshu city of Aomori. A group of stratovolcanoes and lava domes was constructed within an 8-km-wide caldera. From left to right, the peaks are Takada-Otake, Akakura-dake, Ido-dake, and Hakkoda-Otake (the highest peak of the complex, at the right center). No historical eruptions are known from the Hakkoda group, although an active fumarolic area and hot springs are present.

Photo by Hisashi Sasaki, 1996 (Hokkaido University).

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.

Japan Association Quaternary Research, 1987. Quaternary Maps of Japan: Landforms, Geology, and Tectonics. Tokyo: Univ Tokyo Press.

Japan Meteorological Agency, 1996. National Catalogue of the Active Volcanoes in Japan (second edition). Tokyo: Japan Meteorological Agency, 502 p (in Japanese).

Japan Meteorological Agency, 2013. National Catalogue of the Active Volcanoes in Japan (fourth edition, English version). Japan Meteorological Agency.

Kudo T, Hoshizumi H, 2006-. Catalog of eruptive events within the last 10,000 years in Japan, database of Japanese active volcanoes. Geol Surv Japan, AIST, http://riodb02.ibase.aist.go.jp/db099/eruption/index.html.

Kudo T, Okuno M, Ohba T, Kitade Y, Nakamura T, 2000. The eruptive products from Jigoku-numa hot pool in Kita-Hakkoda volcano group, northeast Japan: eruption style, magnitude and age. Bull Volc Soc Japan (Kazan), 45: 315-322 (in Japanese with English abs).

Kuno H, 1962. Japan, Taiwan and Marianas. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 11: 1-332.

Nakano S, Yamamoto T, Iwaya T, Itoh J, Takada A, 2001-. Quaternary Volcanoes of Japan. Geol Surv Japan, AIST, http://www.aist.go.jp/RIODB/strata/VOL_JP/.

Ohba T, Kitade Y, 2005. Subvolcanic hydrothermal systems: implications from hydrothermal minerals in hydrovolcanic ash. J Volc Geotherm Res, 145: 249-262.

Suzuki T, Eden D, Danhara T, Fujiwara O, 2005. Correlation of the Hakkoda-Kokumoto Tephra, a widespread middle Pleistocene tephra erupted from th Hakkoda caldera, northeast Japan. The Island Arc, 14: 666-678.

Suzuki T, Nakayama T, 2007. A 2.0 Ma widespread tephra associated with a large-scale pyroclastic flow from the Sengan geothermal area, northeast Japan arc. Bull Volc Soc Japan (Kazan), 52: 23-38 (in Japanese with English abs).

Volcano Types

Stratovolcano(es)
Caldera
Lava dome(s)

Tectonic Setting

Subduction zone
Continental crust (> 25 km)

Rock Types

Major
Andesite / Basaltic Andesite
Dacite
Basalt / Picro-Basalt
Rhyolite

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
225
730
476,624
1,921,667

Affiliated Databases

Large Eruptions of Hakkodasan Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).
Smithsonian Collections Search the Smithsonian's NMNH Department of Mineral Sciences collections database. Go to the "Search Rocks and Ores" tab and use the Volcano Name drop-down to find samples.